Answer:
they developed the first alphabet
Step-by-step explanation:
The Phoenicians are best known as transmitters because they developed the first alphabet. The Phoenician alphabet was a set of symbols representing individual sounds, which made it easier to write and communicate. This innovation in writing system allowed for the transmission of information and knowledge across different cultures and languages. The Phoenicians' alphabet became the basis for many other writing systems, including the Greek and Latin alphabets, which are still widely used today.